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Coolant pump noise question

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by satsuke, Dec 16, 2007.

  1. satsuke

    satsuke Junior Member

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    Has anyone else had a problem with the coolant pump that runs after the poweroff? On my 2006 it makes a loud noise every once and awhile and always sounds like it's got a bearing burned or something.

    No problems otherwise so far ,. only thing I had to take it in for on warrenty issues was the rear spoiler came loose (and still rattles pretty good).

    Only other comment ,. car hates cold weather ,. went from ~50 mpg city to ~36-40 once the temp is below 40 (30 minute commute).

    Satsuke
     
    #1 satsuke, Dec 16, 2007
  2. efusco

    efusco Moderator Emeritus
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    Yea, it gets loud in cold weather. As long as it's making noise it's working...usually. A few folks have had theirs replaced for some severely abnormal sounds.
     
    #2 efusco, Dec 16, 2007
  3. satsuke

    satsuke Junior Member

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    Mine has done it more during warm weather than not actually ,. it's garaged and is around 70 most of the time..
     
    #3 satsuke, Dec 16, 2007
  4. ramer

    ramer Junior Member

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    The coolant pump on my 2006 (April) started gurgling when I turn the power on. In the past several weeks it has started squawking loudly when I turn the power off. It definitely sounds like a dry bearing.
     
    #4 ramer, Dec 17, 2007
  5. HTMLSpinnr

    HTMLSpinnr Super Moderator
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    Every year when it cools off, my '04 has the same "fried bearing" sound as well. This year it's a bit worse (as w/ 92k miles it should), but still functional. I'd love to find that poor bearing and give it a squirt of grease though just to avoid the expensive repair down the line.
     
    #5 HTMLSpinnr, Dec 17, 2007
  6. priusincc

    priusincc Member

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    Noisy coolant pump??

    I have noticed more noise since the cold weather hit. I was reading posts on noisy pumps and was convinced I may have a pump problem too, but then ran across a thread on a "barking" noise some others have posted. The "barking" on startup is apparently caused by the ABS actuator valve. I only mention this to insure the two noises aren't confused by others, so that appropriate action can be taken with the dealer.
     
    #6 priusincc, Dec 17, 2007
  7. JayGoldstein

    JayGoldstein Member

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    #7 JayGoldstein, Dec 17, 2007
  8. a priori

    a priori Canonus Curiosus

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    Your link just takes one back to the top of this thread. Do you have another reference?
     
    #8 a priori, Dec 17, 2007
  9. JayGoldstein

    JayGoldstein Member

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    #9 JayGoldstein, Dec 17, 2007
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